Caterpillar of Archduke butterfly (Lexias pardalis dirteana)

The eggs are laid singly on the underside of a leaf of the host plant. Each egg is dome-shaped with a base diameter of about 1.8mm. The surface is covered with large irregular hexagonal depressions with hair-like protuberances emerging from adjoining corners. The tip of each "hair" carries a tiny fluid droplet. The color is initially dark green but turns purplish brown on day 2.